Single trigger mechanism



Aug. 9, 1932. J. BROWNING SINGLE TRIGGER MECHANISM Filed Jan. 11. 1930 Patented Aug. 9, 1932 *CfJOHNlBROWNING; or OGDEN," UTAH, ASSIGNORTO J. M. & MLS. BROWNING'CGMPANXF,

OFFOGDEN; UTAH, A oonroanmron or UTAH SINGLE "TRIGGER ilvIECHANISMI.

Application filed January 11, 1930. Serial No. 420 0943 This invention *relates to improvements in single tnigger mechanism forwdou'ble guns (either otthew undertypes) :in

"hired in succession (selectively or otherwise) UPQHiSllCCGSSiVB resets. single trigger.

In; order thatw'the aims of theinvention hereinafter it pointed out, and my HHPI'OVQCl" arrangements for accomplishing these aims,

resulting ftdo'ublingl? are probably due to the fact-that'ivhen the triggeris pulled to fire the first barrel, the gun upon-discharge, recoils and the trigger recedes from the finger, Whereupon the trigger returns to :(JPGTZttlVG posh tion and uponathe rebeundforwardly of the fromnthe shoulder the trigger reen'gages t "the iingerwwhich may have followed the gun in its recoil. it When the finger is thus reeng aged bythetriggenthesecond barrel may be un'intentionally discharged lnsuch rap1d succession to thefirst barrel thatthe shooter "iswunconscious of having .fdoubled, the reports being so close together as to be frequently indistinguishable from one another,

-by sideor the over-and-= which the barrels may be y second position cannot take place maybmmorer easily understood, it may be* advance into operative relation tothesear-Z associated with the second barrel soquickly that a second intentional pull on the trigger before the trigger mech'a-nlsm has reached the A still further ai1nof the invention -is to provide a trigger mechanism of the char--- lacter described and wherein the-lightness of .the. Weight of pull onthe trigger to fire the gun is limited only by a sufiicientlytsecurearrangementbetween the hammers andsears to prevent-the second searfrom jarring-outset m engagement with its hammer when the firstbarrel isfired.

A still further aim of the inventionis to provide an improved arrangement where or; so" close-that the interval. between the re.-

ports isalmost imperceptible.

Thenmain 3.111% of the present? invention 1s to provide an improved arrangement Wherein d'oublingii is absolutelyTend-entirelyi avoided; thataisto. say, that arrangement is such that there is no possibility of firing the secondtbarrel during the recoil and rebound; of the gun due to the discharge of thefirst barreli A iEllrt-hQI aim of the invention isto provide an improved arrangement having the arrangementyislsuch that doubling, due to involuntary pull, is avoidechthe operation ofthe inechan-ism ls such that the trlgger mechaism-after the first barrel 1 1S4 fi1'6(l'-Wlll mer should the gun be jarred as, for example,

in the eight ofany part orpart-s operating; upon the sears is not suflicient' to accident-q allydisengagea sear fromits cocke'd ha1nif the gun were dropped.

A further aim'of the inve ition-is to provide a trigger arrangementhaving the above and other objects, and which-isclraracter-r ized by its simplicity in :construction and its resultant economy in manufacture; by' itsdurability and sturdi11es-s, and by- -its reliability and effectiveness in operation. My? improved mechanism comprises a relatively few number of parts each of Which -m-aybeeconomically made, and each-pf which 'is-'0fitself strong and durable; 1 These parts may be assembled with readiness-and facility, and repairs, if such are necessary, may' wbeeasily and quickly made." i Other objects will be in part obvious and in part pointed out more detailherein? after. y 7

The invention accordingly consists in {the-- features of construction, combination offele rments and arrangement of parts-=which; Will:-

be; exemplified in I the construction herein-F after set forth and thescope of the-applica tion of which willbe-indicfated in the-ap-rpended claims. p I

3 The invention consists generally in a trig-{ ger mechanism hav inga trigger-and'econ nect'or associated with and-operated bye-the trigger for engaging the sears in successionw i upon successive intentional pullsof'rthetrig-u ger, the connector being so arranged that, after one barrel is fired, and upon forward rebound of the gun from the shoulder, the connector automatically is thrown out of operation with respect to the sears so that, in case of involuntary pull during the jump of the gun, firing of the second barrel is absolutely prevented; the arrangement, however, being such that, after the first barrel is fired, the trigger mechanism is automatically advanced to a position where the second barrel may be intentionally fired as quickly after the first barrel has been fired as any shooter may desire. V

In the accompanying drawing, wherein I have shown, for illustrative purposes, one embodiment which the present invention may take, it being understood that this disclosure is by the wayof exemplification only and my improvements may be incorporated in guns of various kinds and types and in connection with firing mechanisms of various styles and forms:

Figure 1 is a side elevational view of my improved arrangement with both of the 'hammers in cocked position and the connector in position to actuate the left hand sear upon the first pull of the trigger;

Fig. 2 is a view similar of Fig. 1 but showa ing in full lines, the left hand hammer as having been fired and the connector as having moved to the position to actuate the right hand sear upon the second pull of the trigger, the inertia element and connector being also shown by dash anddot lines in the position which they have during the period of involuntary pull;

"Fig. 3 is a sectional view taken centrally and longitudinally through the mechanism;

Fig. a is a detail view taken substantially on line H of Fig. 1;

"Fig. 5 is 'asectional view taken on line 55 of Fig. 1;

'Fig. 6 is a perspective View of the sears,

connector and shifter, the connector being in position to release the right hand sear on the first pullof the trigger; and

Fig. 7 is a top plan view, on an enlarged scale, of the platform of the safety device and the guide plate 50.

Referring to the drawing in detail, 10

designates the; frame of the gun, the same being shown more or less diagrammatically as it may be of any suitable construction and the particular form and shape thereof form no part of the present invention. The firing mechanism includes a pair of hammers 11 andlQ, pivoted as at 13. Respec-.

tively associated with these hammers are the sears 14 and 15 which may be of any suitable construction and which may be located as desired depending'upon the form and position of. the hammers themselves. The sears are pivoted on a pin. Each of the hammers is normally urged into firing posi tion by a spring such as a spring 9. Each of the hammers has, on its outer face, a notch 16 which is adapted to be engaged by a tooth 17 on the respective sear for holding the hamwhich may be of any suitable construction and which, in the present instance, is pivoted adjacent its forward end on a pin 26. This trigger has a recess 27 forming a socket in which the lower end of the connector is adapted to engage.

The connector may be of any suitable form or construction insofar as certain aims of the invention are concerned but, by preference, it is of the novel arrangement disclosed in the drawing and which arrangement will permit of selectability as to which barrel will be fired'first, as desired. In the present illustrative disclosure, the connector, which is designated generally by the numeral 30, is in the form of a stem, the lower end 31 of which is pointed and engages in the socket 27 of the trigger. The upper end of the connector is more or less fork shaped so as to provide a pair of fingers 32 and 33 which are adapted to engage the projections 19 of the sears in the proper order upon successive pulls of the trigger. The forward finger 32 is the one which results in the release of a sear from its hammer upon the first pull of the trigger, and the rearward finger 33 results in the other sear being released upon the next pull of the trigger. The stem of the connector is non-circular or has flattened sides, as at 34, for a purpose which will be later described. The connector is normally urged forwardly towards the hammers and to its seat on the trigger by a spring 35 about a plunger 36, the lower end of which is seated in a recess or socket 37 in the stem of the connector; The upper end of the plunger is guided in an opening 38 in the top of the carriage which will be hereinafter described.

Extending laterally from the connector adjacent its lower end is a fin 39 engaging in a V- shaped notch 40 in the shifter almounted for I sliding movement in a slot in the bottom tang i hi otqh hzitosp r it t the,connector to pass through so that that finger can move from; one sear to the other.-

Mshz iet ege isin unpulle c ndition i he. 1 mm thei onnec er e gagesl 'thet,

nectorfi-and to give a-firmihearingio theteenes QQ ta notch-4: thu heq nnec rl iski etsn ed tro ia en ally it ngm; ne pesi iqh to ahether ab u ts long udinal m Whent e n gger is p ll d, however,

. h ans raisein the notch. 40 and,; n1es a some means were, provided,,there-is a possi-- bilitytthat the connectorv would accidentally p 1 eior e ;t sguardiagai thisrt e srrwid daguide plat L O=Wh Qh h fing 2mm 319i "therc nnest r re dapte t teeddlew heu i onn c 1 is aised p pull ot the trigger, This plate 50 is located twee ithei e rs n i h din pla e by the pimlit n wh h the ars-l 311 1 r riv otedL; The ,upper edge of the, plate engages nane gr om 5,1: in the nder e o e ppe tang M Theilower edge of p the plate 50 has a e forwardfinger 32 01.

Also, th ,plateprevents the connector from being, shrf daccidentally ,or otherwise when either or both of the hammers have been fo1;,,in ,suchinstancagneither of the fingers 32 or 33 are in registry with the notch 52.

a In order to hold the shifter in each ofits selected positions, any suitable meansmay be v vproy-idedbut, by way ofexample, I have shown h a hii er as, having a pair of laterally extending.,- holes ;,inwhich is adapted to selectiyely; .engagera pin 56 behind which is a rma t used Withinahollow screw 58 th-r eaded into thelowver tang. The trigger is cutaway onllotchedat 59:50 as to accommodate theiscrew. Thehollowscrew serves as t a forlimiting the extent of pivotal movementief the trigger 25 ,bothupand down.

Reference will {now be-had to the means for pretentingfdoubling dueto involuntary pulley; In accordance with the present inven tioman inertia elementgis somassociated with theiconnector that the latter will lag behind 45, the; gungupon the rebound of the latter, This inertia elementyhasianiinertia block 60 to the forward end of ,whichis connected a part; 61 which, for, convenience in; terminology, may bercalleda carriages The block 60 is of cylin- 9 dnicalyform and is located for sliding movement in. a tubeaor, barrel162: projecting rear- Wardlyfronithe frame 10.; The forward end 6330f; "the. black is i of, reduced diameter and projects through-anopeningin the rear wall 1 55 ofithe-frame. By reducingtheforward end of the'blockna shoulder 65-is providedwhich serveszto, limit the; forward movement; of; the

block ,under .the'vinfluence of the; spring 661 located behind the block and engaging against 1 ditions The Width of;Sthisopeninggisgsuehn s to lim t, the turn ng. mot mentot the cona hector in its ve i a1.movemelite'- The springs 35 urges he onnector .aga ;n t:-.: e orwardi edge 6910f thisiopening The arrangement issuch that, wheneithelzrp or both i of the hammers is moye d, ,fmimdis charged to cocked posit-ion; that;=moveme1 r.

results in the connector;,being m ,w

are cocked) in whichtheforward edgeofthe cam 7 6 engages. (See Fig. 4).

In describing the operation of; the trigger: mechanism, it maybe assumed that it is ins; corporated in a gun of thelov lfzsandsundeiiz type and that the over barrel isassociated with the left hand sear and the under, barrel with the right hand sear. Assuming that iti is desired to fire the shell in :theiover bore;

i first, the shifter will be moved to its. rearmost position so asto bring the connector-A20; the position shown in Figs; 1 and 3 ofthe drawing and in, b which; position ,the fingen 32is immediately beneath the projection 19 of the left hand sear1l4. When the trigger is pulled, the connector; is raised so that the QT...

finger 32 will raise the Iefthand; sear, 3th11$ releasing the left hand, hammer whereupom after release of the trigger,the -parts-rwilli move to the position shown by full lines in-s Fig. 2. i It will be noted that theconneetoreisg 1 moved forwardly so that ;the; rea1;- finger 333 is now beneath the proj ectionzl9 otthe-right hand sear 15 sothat,-when thef trigger is again pulled, the under barrel is .fired.- Itg-wilLbefurther observed, as heretofore stated,,that, when the trigger is raised, the ;fingers;32 and- 33 are brought in straddling relationytoq the 1, guide plateso that the connector cannot bes accidentallyiturned or shifted'by the jarot, the gun.- The connector can only lie-shifted for purposes of selectahility when; it is im-the; position shown in Figs. 1 and 3 and iIl WhiGhyposition the forward fingers 32; may; "mo e: through the notch 52-;when the Shi;fiter -'iS;;,

moved longitudinally. It is further;-;to ;,be;;12e;, noted that, when thetriggenispulld the, first time, as just described,;the connector, is,- raised and the .rearmost finger ofithe een nector. will be behind andiinzthe ip an 0 3 11 right: hand s ar-s0 that ii t eitriggerasehelrh 1 7 ascrew 6'Z which closes the rear endhof the tube62: 1; Thezcarriage. 61 may be pinned to p thenforlward end; of the block, as shown, and; hash-an peningfi8ithroughcwhich the con-nectonzextends sand LNvhich the connector base i 65 limitedrelatiwemovement-under certain. con-,

in pulled condition this finger will engage against the rear end of that sear and thus the connector will be positively held against assuming the operative position shown by full lines in Fig. 2,'until the trigger is released. In other words, the r-ea'r'end of the sear and the rearmost finger constitute, so to speak, means for preventing full forward movement of the connector while the trigger is held in pulled condition upon firing of the first barrel. This arrangement is of advantage in that it further guards against involuntarypull and relieves certain of the parts of certain strains which might otherwise result.

When the left hand hammer 11 has been discharged, the support for the cam 76 is thus removed and the cam, due to its V-shaped edge and level surface 77 of the right hand hammer, may swing to the left, whereupon the inertia block, under the influence of the spring 67 behind it, will move, together with the connector, to the position shown in Fig. 2.

When the gun is broken, the usual cocking.

lever (not shown) will cook the left hand hammer and, while that hammer is swinging rearwardly and downwardly, it will engage the cam 76 and thus move the inerita block, together with the connector, back to the initial position shown in Fig. 1. The right hand hammer operates in a similar manner.

Do;ubling, the cause and effect of which have been previously described, is avoided and, in fact, entirely guarded against by the action ofthe inertia element on the connector. It will be remembered that the connectorengages the forward edge 69 of the opening 68 in the carriage 61 so that, upon rebound of the gun, the connector cannot jump forwardly of ,the inertia block. On the forward rebound of'the gun, the inertia" element, due to its'mas's, will lag behind the gun. Also the connector will be caused by the inertia block to lag behind the forward movementofthe' gun and, during this extremely brief period, the connector is held out of operative posi tion with respect to the sears, as is shown by j the dash and dot lines in Fig. 2' If, during this interval and during'the rebound of the gun, the trigger, which has jumped away from the finger of the shooter on the recoil of the gun, shouldlagain re-engage the finger resulting in an unintentional pull of the trigger, the

second sear will not be operated. The timing is such that the connector is held by the inertia of the inertia block out of operative re lation to the sears during that period in which the trigger and finger are likely to be re-engaged, that is to say, the inoperative position of the'connector and the involuntary pull'coincide." It will be observed, however that while doubling, due to involuntary pull,

,is absolutely guarded against, the trigger.

mechanism may assume its firing position (shown by full lines in Fig. 2) relative to the second sear immediately after the danger of succession as is humanly possible.

I to prevent one sear being arred off when the other sear is fired. It will still further be observed that the inertia block is mounted for rectilinear movement and thatthat block is not supported on or carried by the connector.

The connector and the trigger are of relatively light weight and, as these two parts are the only parts that can'bear on the scars in a direction to disengage the same,'there is little possibility of those parts disengaging the sears in the event that the gun should be severely arred, as would be the case if it were dropped onto the ground in an upsidedown condition. f

Thesafety mechanism shown in the drawing has certain features of novelty and advantags which will now be described. Slidably v mounted on the top tang of the frames is a safety latch having a thumbpiece or plate and a depending web 91 extending through a slot in the tang. The lower edge of this web 7 in the off position lies forwardly of the upper end of the plunger 36 which, as stated, is

associated with the connector. 'Theo1l po isition is shown in the Figs. .1 and 2. VVhen' the safety latchis'in thesafe position shown in Fig. 3, the webis immediatel above the upper end of the plunger 36 so that the trigger cannot be pulled. Pivoted tothe web by a' pin 92 is a U-shaped platform 93'having, at its free ends, projections or lugs 94: which are adapted to selectively engage in notches 95 and 96 on the under side of the upper tang. V The platform isnorm'ally urged in a-direc tion to engage the lugs 94 against the under" surface of the tang by a spring 97, the forward end ofwhich passes through an opening in a depending web 98. The extreme forward end of the spring is turned upwardly and is adapted to resiliently'engage in an opening 99 in a horizontal web 100. Thesewebs 98 and 100 are formed by-a'generally L-shaped projection extending" laterally from the side of the guide plate 50. It will 7 be observed that this arrangement is very simple and effective. I

As many changes could be made in the above construction and many apparently widely different embodiments of thisinvention could bemade without departing from the scope thereof itis intended that all matter contained in the abovedescription or shown;

used in the following claims is intended to .cover 'all of the generic and specific features of the invention herein described and all statements of the scope of the invention which, as a matterof language, might be said to fall therebetween. i i

I claim as my invention:

1. In combination, hammers, sears respec tivelyassociated therewith, a trigger mechanism including a connector through which said sears are successivelyoperated upon successive intentionalpulls of the'trigger and an inertia block supported for movement otherwise than on said connector and associated with. said connector for maintaining the .same. out sofoperative relation to the scars duringthe forward rebound of the gun.

2. In-combination, hammers,sears respectively associated therewith, a trigger mechanism including a connector adapted to move forwardly from operative position with respectwto one sear to operative position with respect to the other sear, and an inertia elementrto which said connector has relative movement and adapted to engage and hold said connector in inoperative position with respectto the sears during the period of involuntary pull:

8. In combination, hammers, sears respectively associated therewith, a trigger mechanism including a connector through which i said searscare successively operated upon successive intentional pulls of the trigger, and an inertia element mounted for rectilinear sliding movement longitudinally of the gun and having aface against which said connecto is adapted to engage whereby said connector is held against movement into operative position with the successive sear during the period of involuntary pull.

4. In combination, a frame, hammers within the frame, sears respectively associated with the hammers, a trigger mechanism including a connector throughwhich said sears are. successively operated upon successive intentional pulls of the trigger, and an inertia element slidablysupported by said frame and having a part through which said connector extends, said inertia element being arranged to engage said connector and hold the same in inoperative relatlon to the sears'during the period of involuntary pull. 1

TED

In combination, a frame, hammers, sears respectively associated with the hammers, a trigger mechanism including a connector through which said sears are successively operated upon successive intentional pulls of the trigger, an inertia element supported by the frame and associated with said connector has involuntary pull, and aspring normally urging said inertia element forwardly.

6. In combinatiomhammers, sears respectively associated therewith, a trigger mechanism including a connector through which said sears are successively operated upon successive intentional pulls of the trigger, a slidably mounted inertia element having an in ertia block and a carriage, said carriage being adapted to engage said connector to hold the same in inoperative position with respect to the sears during the period of involuntary pull, a plunger having one end engaging said connector and the other end slidably guided by said carriage, and a spring about said plunger and bearing against said carriage.

. 7. n combination, hammers, sears respectively associated therewith, a trigger mechanism includinga connector through which saidsears are successively operated upon suc cessive intentional pulls of the trigger, an inertia element associated with said con nector for holding the same in inoperative position with respect to thesears during the periodof involuntary pull, means for normally urging said inertia :ele ment forwardly, and cooperating means between said hammers and. inertia elementfor retracting. said inertia element and moving therethrough said. connector to initial position when either or both of said hammers are moved to cocked position.

8. In combination, hammers, sears respectively associated therewith, a trigger mechanism including a connector through which said sears are successively operated upon successive intentional pulls of the trigger, an inertia element associated with said connector for holding the same out of operative relation to the sears during the forward rebound'iof the gun, and a membercarried by said iner tia element, said: hammers having faces adapted when either or both of the hammers are movedto cocked position'to engage said member and being arranged, when either hammer'is discharged, to disens gage from the cocked one and follow the one. discharged. r

1 9. In combination, hammers having on their rear ends adjacent inclined surfaces forming a V groove, sears respectively associated therewith, a trigger mechanism including a connector through which said sears are successively operated upon successive inten tional pulls of the trigger, a slidable inertia element adaptedto engage and hold said connector in inoperative position with respect to the scars during the period of-involuntary pull, a spring urging said element forwardly and a transversely movable cam carried by said element and havingan edge adapted to engage in said groove when both of said ham mers are cocked.

10. In combination, a pair ofrhammers, a scar for each hammer, a single trigger, a

connector supported by said trigger and ar ranged to successively actuate said sears on repeated pulls of the trigger, said-connector being adj ustably supported whereby the same may be selectively set so that the sears will be operated in the desired order on repeated pulls of the trigger, means for selectively setting said connector, and an inertia element adapted to engage and hold said connector in inoperative position with respect to the sears during the period of involuntaryzpulh 11. In combination, a pair of hammers, a sear for each hammer, a single trigger, a connector supported by the trigger and arranged to successively actuate said sears upon re peated pulls of the trigger, a shifter associated with said connector for selectively set? ting the same relative to'said sears, and an inertia element supported for sliding movement and adapted to engage said connector and hold the same against forward movement during the period of involuntary pull, said element also constituting means for in part guiding said connector.

12. In combination, a pair of hammers, a sear associated with each hammer, a single trigger, a connector supported by the tug ger for turning movement from one position to another to allow of selectability of the or der in which the barrels are fired, and an inertia element arranged to engage said connector and hold the same in inoperative position with respect to the sears during the period of involuntary pull, said element having a part provided with an opening through which said connector extends and in which said connector has relative movement with respect to said element. 7

13. In combination, hammers," sears re spectively associated therewith, a single trigger, a connector through which said sears are successively operated upon successive intentional pulls of the trigger,lsaid connector being supported by said trigger for turning movement to allow of selectability of the order in which the barrels are fired, an inertia element associated with said connector for maintaining thesame in inoperative position' with. respect to the sears during. the periodof' involuntary pull, and cooperating means between said hammers and inertia element whereby said element is retractedand the connector is moved to initial position when the hammers, either singly or together, are moved to cocked condition. i

14;. In combination, a pair of hammers,a sear for each hammer, a single trigger, a connector mounted on said trigger for selective adjustment relative to the sears so that thelatter will be operated in the desired selected order on repeated pulls of the trigger, a shifter for selectively adjusting said connector and means independent of the hammers, sears and-shifter for preventing shifting ofthe connector from one selected position to the other when it is in pulled condition.

15,. In combination, a pair of hammers, a

sear for each hammer, a single trigger, a connector in all positions of said connector and trigger, except when the connector 1s 1n 1n-' itial position and the trigger is unpulled when the connector is in that position.

16. In combination, a pair of hammers, a scar for each hammer, a single trigger, a connector supported by the trigger and arranged to successively actuate said sears on repeated pulls of the trigger, a shifter associated with said connector for selectively setting the same relative to said sears so that the'latter will be operated in the desired selected order on repeated pulls of the trigger, said shifter preventing accidental shifting of the connector when the trigger is in unpulled condition, a fixed plate, and a pair of fingers on said connector and adapted to engage said sears, said fingers being in straddling relation to said plate when said trigger is pulled. V

17. In combination, a pair of hammers, a sear for each hammer, a single trigger, a connector supported by the trigger and having a pair of'fingersadapted to engage said sears, a shifter for selectively setting said connector so as to adjust the fingers in the desired relation to said sears, said shifter preventing accidental shifting of the connector when the trigger is in unpulled condition, and a plate above said connector and having a notch permitting shifting of saidconnector fwhen' the connector is in initial position and nector and hold the same in inoperative position with respect to the sears during the 7 period of involuntary pull, a spring pressed plunger engaging said connector and slidably guided by said element, and a safety device adapted, when in safe'position, to lie above said plunger and prevent actuation of the trigger.

19. In combination, hammers, sears respectively associated therewith, a trigger, a connector supported thereby, a slidably mounted inertia element having an inertia block and a carriage, said carriage being adapted to engage said connector to hold the same in inoperative position with respect to the sears during the period of involuntary pull, a

plunger having one end engaging said connector and the other end slidably guided by said carriage, a spring about said plunger, and a slidable safety device havin a portion adapted to lie, when the safety evice is in safe position, in the path of movement of said plunger so as to hold the same and the trigger against actuation, said portion being removed from the path of travel of the plunger when the safety device is in 0E position.

20. In combination, a frame having a lower tang provided with a slot, a trigger in said slot, a pin on which said trigger is pivoted, a connector supported by the trigger from turning movement, a shifter alongside of said trigger and mounted for sliding movement in said slot; and means for bolding said shifter in each of its adjusted positions and including a pair of recesses in said shifter, a spring pressed plunger adapted to engage in said recesses and a screw carried by said tang extending into said slot and supporting the spring and plunger, said screw 7 constituting means for limiting the extent of pivotal movement up and down of said trigger.

21. In combination, hammers, sears respectively associated therewith, a trigger mechanism including a connector adapted to move forwardly from operative position with respect to one sear to operative position with respect to the other sear, an inertia element movable forwardly with said connector and adapted to hold said connector in inoperative position during the period of involuntary pull, and means for preventing said inertia element and connector from moving forwardly while the trigger is held in pulled condition upon firing the first barrel.

22. In combination, a pair of hammers, a, sear for each hammer, a single trigger, a connector supported by said trigger and having a pair of fingers adapted to engage said sears, and an inertia element mounted for rectilinear sliding movement longitudinally of the gun and constituting guiding means for the connector when the trigger is pulled, said inertia element and connector being movable forwardly and rearwardly of the gundue to inertia, one of said fingers being arranged to engage the rear end of the unfired sear while the trigger is held in pulled condition after firing the first barrel.

JOHN BROWNING. 

